Book Image

Learn React with TypeScript 3

By : Carl Rippon
Book Image

Learn React with TypeScript 3

By: Carl Rippon

Overview of this book

React today is one of the most preferred choices for frontend development. Using React with TypeScript enhances development experience and offers a powerful combination to develop high performing web apps. In this book, you’ll learn how to create well structured and reusable react components that are easy to read and maintain by leveraging modern web development techniques. We will start with learning core TypeScript programming concepts before moving on to building reusable React components. You'll learn how to ensure all your components are type-safe by leveraging TypeScript's capabilities, including the latest on Project references, Tuples in rest parameters, and much more. You'll then be introduced to core features of React such as React Router, managing state with Redux and applying logic in lifecycle methods. Further on, you'll discover the latest features of React such as hooks and suspense which will enable you to create powerful function-based components. You'll get to grips with GraphQL web API using Apollo client to make your app more interactive. Finally, you'll learn how to write robust unit tests for React components using Jest. By the end of the book, you'll be well versed with all you need to develop fully featured web apps with React and TypeScript.
Table of Contents (14 chapters)

Summary

We've learned some of the more advanced types in TypeScript in this chapter, starting with union types. Union types are extremely useful, allowing us to create new types by unioning existing types together. We discovered that unioning together string literals allow us to create a type that is more specific and type-safe than a regular string.

We explored various ways of implementing type guards. Type guards are useful to help the compiler narrow down a union type in branches of logic. They are also useful when working with the unknown type to tell the compiler what the type is in branches of logic.

Generics, as the name suggests, allow us to create generic types. Having covered this topic in detail, the type-safety for props and state in React components makes a lot more sense now. We will continue to use generic classes and functions heavily in the rest of the book...